ProgramNode(0...14)(
  [:a],
  StatementsNode(0...14)(
    [LocalVariableWriteNode(0...14)(
       :a,
       0,
       RescueModifierNode(4...14)(
         IntegerNode(4...5)(),
         (6...12),
         IntegerNode(13...14)()
       ),
       (0...1),
       (2...3)
     )]
  )
)
